(VBScript) Facebook OAuth2 Access Token

Chilkat ActiveX Downloads

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)
' It requires the Chilkat API to have been previously unlocked.' See Global Unlock Sample for sample code.set oauth2 = CreateObject("Chilkat_9_5_0.OAuth2")
' This should match the Site URL configured for your Facebook APP, such as "http://localhost:3017/"
oauth2.ListenPort = 3017
oauth2.AuthorizationEndpoint = "https://www.facebook.com/dialog/oauth"
oauth2.TokenEndpoint = "https://graph.facebook.com/oauth/access_token"' Replace these with actual values.
oauth2.ClientId = "FACEBOOK-CLIENT-ID"
oauth2.ClientSecret = "FACEBOOK-CLIENT-SECRET"' Set the Scope to a comma-separated list of permissions the app wishes to request.' See https://developers.facebook.com/docs/facebook-login/permissions/ for a full list of permissions.
oauth2.Scope = "public_profile,user_friends,email,user_posts,user_likes,user_photos,publish_actions"
oauth2.CodeChallenge = 1
oauth2.CodeChallengeMethod = "S256"' Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser.
url = oauth2.StartAuth()
If (oauth2.LastMethodSuccess <> 1) Then
outFile.WriteLine(oauth2.LastErrorText)
WScript.Quit
End If' At this point, your application should load the URL in a browser.' For example, ' in C#: System.Diagnostics.Process.Start(url);' in Java: Desktop.getDesktop().browse(new URI(url));' in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")' wsh.Run url' The Facebook account owner would interactively accept or deny the authorization request.' Add the code to load the url in a web browser here...' Add the code to load the url in a web browser here...' Add the code to load the url in a web browser here...' Now wait for the authorization.' We'll wait for a max of 30 seconds.
numMsWaited = 0Do While (numMsWaited < 30000) And (oauth2.AuthFlowState < 3)
oauth2.SleepMs100
numMsWaited = numMsWaited + 100Loop' If there was no response from the browser within 30 seconds, then ' the AuthFlowState will be equal to 1 or 2.' 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.' 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.' In that case, cancel the background task started in the call to StartAuth.If (oauth2.AuthFlowState < 3) Then
success = oauth2.Cancel()
outFile.WriteLine("No response from the browser!")
WScript.Quit
End If' Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred' The possible AuthFlowState values are:' 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.' 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.' 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.If (oauth2.AuthFlowState = 5) Then
outFile.WriteLine("OAuth2 failed to complete.")
outFile.WriteLine(oauth2.FailureInfo)
WScript.Quit
End IfIf (oauth2.AuthFlowState = 4) Then
outFile.WriteLine("OAuth2 authorization was denied.")
outFile.WriteLine(oauth2.AccessTokenResponse)
WScript.Quit
End IfIf (oauth2.AuthFlowState <> 3) Then
outFile.WriteLine("Unexpected AuthFlowState:" & oauth2.AuthFlowState)
WScript.Quit
End If
outFile.WriteLine("OAuth2 authorization granted!")
outFile.WriteLine("Access Token = " & oauth2.AccessToken)
outFile.Close